On the basis of the developed nonlinear kinetic theory, calculations of the expected flux of gamma radiation from the remnant of SN 1006 are performed. Here the effects of escape of high-energy particles from the acceleration region, an arbitrary dependence on the coordinate of the enhanced magnetic field and the diffusion coefficient in the upstream of the shock are taken into account. Preliminary results of calculations are presented and compared with Fermi and H.E.S.S.